Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor

A technology of superalloy and electroslag remelting, which is applied in the field of refining process, can solve the problems of quality impact of formed parts, refinement of droplet diameter, and no better solution, and achieves refined diameter, extended residence time, and increased migration rate. Effect

Active Publication Date: 2010-01-13
SHANGHAI UNIV
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Problems solved by technology

However, how to effectively refine the droplet diameter has not yet proposed a better method
In addition, when the electroslag ingot under the slag pool is solidified, the ingot structure is thick columnar crystals or dendrites growing obliquely upward due to water cooling at the bottom and the surrounding area, and the interdendr

Method used

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  • Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor
  • Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor
  • Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor

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Embodiment 1

[0032] see figure 1 , The magnetron electroslag remelting and high-efficiency refining superalloy device is composed of a superalloy electrode to be refined 1, a water-cooled copper mold crystallizer 2, a constant magnetic field generator 3, a voltage-regulated and frequency-regulated AC power supply 4, and an electroslag ingot of solidified metal 5. Molten slag liquid 6, water-cooled copper plate bottom electrode 7, water-cooled cable 14, upper and lower water-cooled jackets 13, 15, upper and lower water-cooled jacket water inlets 7, 12 and upper and lower water-cooled jacket water outlets 10, 11. The superalloy electrode 1 to be refined is inserted into the molten slag liquid 6 placed in the water-cooled copper mold crystallizer 2 . The superalloy electrode 1 to be refined and the bottom electrode 7 of the water-cooled copper plate are respectively connected to a voltage-regulated and frequency-regulated AC power source 4 . Place the melting end of the water-cooled copper m...

Embodiment 2

[0036] This embodiment is basically the same as Embodiment 1, except that the voltage and frequency modulation AC power supply 4 is changed to a DC power supply to provide a DC current for electroslag smelting, and the magnetic field provided by the magnetic field generator 3 is changed to an alternating magnetic field , can also produce an electromagnetic excitation effect to refine the falling molten droplet 9 and the electroslag ingot 5 .

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Abstract

The invention relates to a method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and a device therefor. The method utilizes electromagnetic shock excitation effect for thinning molten drop and solidification structure, so as to improve the refining effect and reduce segregation. The device comprises a copper mould crystallizer, a water jacket, a high temperature alloy electrode bar, a water-cooled copper plate bottom electrode and a power supply. The invention is characterized in that a magnetic field generator is arranged at the periphery of the water-cooling copper mould crystallizer to generate magnetic field which is compounded with current of electroslag melting, thus generating oscillating lorentz force. The invention is used for electroslag remelting and refining the high temperature alloy, can improve the refining effect and reduce segregation of cast ingot.

Description

technical field [0001] The invention relates to a method and a device for improving the refining effect and reducing ingot segregation in the electroslag remelting process of high-temperature alloys, belonging to the technical field of refining technology. Background technique [0002] The traditional electroslag remelting process is to insert a superalloy electrode made by a common smelting method into a water-cooled crystallizer filled with high-alkaline slag, and use the conductivity of the molten slag to introduce a strong alternating current into the molten slag pool. The current causes the slag to heat up. Under the action of Joule heat, the superalloy electrode gradually melts into molten droplets at the contact end with the slag. During the process of converging and settling in the slag pool, due to the double layer effect and electromagnetic The non-metallic inclusions and impurity elements in the droplet migrate to the surface of the droplet, and then are washed an...

Claims

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Application Information

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IPC IPC(8): C22B9/18C22B9/187
Inventor 钟云波吴秋芳范洋旸雷作胜任维丽任忠鸣
Owner SHANGHAI UNIV
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